Excavator.



A. PERRILLIAT.

EXCAVATOH.

APPLICATiON FILED JULY 31.1915.

Patented Sept. 17, 1918.

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ARSNE PERRILLIAT, OF ORLEANS, LOUISIANA.

EXCAVATO'R.

Specification of Letters Patent.

' Patented Sept. 17, 1918.

Application filed July 31, 1915. Serial No. 42,85*?.

To all 4whom it may concern.' v

Be it known that I, ARsNn PERRILLIAT,

a citizen ofthe United States, residing at New Orleans, Orleans parish,State of Louisiana, have invented certain new and useful Improvements in Excavators, the following being' a full, clear, and exact disclosure of the one form of my invention which I at present deem preferable.

' For a detailed description of the present form of my invention, reference may be ha to the following specification and to the accompanying drawings, which illustrate my invention, wherein- Figure 1 is an elevation of my apparatus;

Fig. 2 is a plan thereof; v

Figs. 3 and 4 are longitudinal, and transverse sections of the skip;

Fig. 5 shows a modified form of skip.

My invention is intended chiefly for building levees and enibankments in cases where a 4wide and shallow borrow-pit is required beyond the transporting capacity of the ordinary excavator, which may be either a steam shovel, or a rotating-derrick excavator of the dragline, orange-peel or clam-shell type.

I purpose to use, in connection with such an excavator, mounted to travel or progress ina line parallel with the levee, a skip reciprocating transversely to the levee from the dumping point thereon to the delivery point of the excavator.` Preferably I use two of these transversely-traveling skips and the load taken up by the excavator is delivered into the two alternately and by lthem is transported to the point of final delivery on the levee. In connection with this arrangement, I lprovide a special form of skip lcapable of being dumped from a distant point of control by inverting it and returning itto the loading point while still inverted.

lThe accompanying drawing illustrates the case whereV an existing levee is tokbe en-V larged by additional material taken from a shallow borrow-pit of considerable width between the leveeand the river. Such a levee is indicated at X at the left of Fig. l and it is assumed that the material is to be added on the right thereof to enlarge the levee to the form shown in the outlineby dotted lines. The part marked B shows the material which is in processof being added to the levee and Cindicates the borrow-pit from which the material is to be taken. On the existing levee is placed an enginev D with suitable winding drums operated thereby, it being my purpose to havel the engine advance along the levee from time to time in the direction shown by the arrows RR as the work proceeds. Opposite the engine D in the direction of the river rbank is shown anexcavator of the boom type which may be asteam shovel ora derrick form of eXcavator havinga bucket E which may be of the drag-line or orange-peel or clam-shell d type. For illustration I have shown one of the dragline form. In any case the boom will'be capable ofrotating on a vertical axis around the base of the elevator and the bucket willbe drawno-ut toward the end of the boom when loaded. It is manifest that an excavator of this kind is limited in its working area bythe length of the boom which ordinarily is not more than one hundred feet in length and cannot practically be more than rone hundred and fifty feet rin length. It is the present plan of my invention to supplement the working range of the elevator A bv combining with it a skip which will reciprocate backA and forth in, a direction transverse to the line of advance movement of the engine YD which is the direction indicated by thel arrows R It, and the corresponding advance movement of the excavator, which is inthe direction indicated by the arrows R1 R1. Such a skip is shown at F in each of the fguresof the drawing and it is intended to be of considerable size- ,presenting, for instance, an

opening ten feet square on its upper side in, p

order that Vthe bucket E may drop inside of it and deliver its load thereto.; The skip is intended to slide on its bottom and for that purpose'is provided onV its under side with a smooth. sliding surface withl curved upturned ends I-I H as appears in Figs. 3, 4 and 5. It is open on its upper side and is provided with double side walls G G which are carried upward to form runners I I curved at. each end, on which theskip may slide upside down on its return trip after Y being turned over 'and'emptied The lbearing surfaceof the bottom "is of much greater areathan the bearing .surface afforded by the runner I I, but the. latter` will' Vonly be used to carry the weight of the skip when it is empty, whereas, when it is load-V edl it will have the large kbearing surface afforded bythe curved bottom. The skip is tol be drawn in a forward direction, when loaded, by 'a bridle H1 attached to the forward end of the skip at the points J J which are quite nearthe bottoni, but it is also provided-with va seconddraft attachment in the form of a similar bridle L attached also to the forward end of the skip at the points K K which are just forward of the downwardly curved'end of the runners I I. The curved ends of the runners cooperate withthe bridle L to give the rearward pull of the. bridle a turningl moment with respect to the bearing point of thev skip on the Oround in order that such backward pull of" that the bridle H1 is relaxed) will invert or overturn theskip endwisevor longitudinally for dumping it. When it has been pulled back the required distance, the pull on bridle L will be relaxed and the skip turned over or righted by a reverse pull on bridle H1 `and that reverse pull will becontinued until the skip comes back to the loading point.

In Fig. 5 avmodified form of skip suitable for certain situations is shown which op erat-es 1n the same way but is goose-shaped vin cross section, the forward end having an inverted arc-shaped projection U and the rear end having a similar but shorter projection TV which, when the 'skip is being dumped, will tend to catchin the ground and prevent a backward sliding movement of the skip. The form of skip shown in Fig. 3 may also be provided with a suitable spud at its rear tok prevent backward sliding move- 'ment when it Vis being overturned and dumped by the pull on bridle L. Y

' Turning to Fig. l, there is shown attached to the forward end of the draft bridle H1 a cable Mpassing over'the winding drum 'N on the platform of the engine'D and a draft rope P yis also connected tothe rearward bridle` L and passes thence over vthe pulleys Q Q, which are anchored to the base of the excavator A and thence extend forv ward'acrossthe borrow-pit to the winding drum vO-which is also onthe base of the engineD. Thus the anchorage lfor the for'- ward pull onrthe skip isv on'the engine bed i, In operation this .excavator copies @rung patent may be obtained fory five cena. each,vby*addi-esing the Viashingtun,1).C.Y

the bridle L (assuming to the skip and dump it thereon. The skip will then transport the material across to the levee. A spaceof unbroken ground will be left ahead of the excavator for its forward advance, which will, however, be removed in the rear of the excavator after it has passed by. In this way the excavator can remove all material in the area swept by'its boom. When this has been done, the excavator, or one following it, will make a second trip alonga route parallel to the levee and mid- ;way between the leveeand the previous excavation, the v'linee of such previous excavation being dei'ned'by the delivery point vof the'skip as shown on the drawing. On

this second trip the material `will be delivered directly to the levee by the excavator, it being understood'thatthe strip of ground which has beenleft unbrokenY on the first trip is of a width vabout equal to twice the length of the boom. f

vhat- Ifclaim as new and desire to secure by Letters Patent is :Y

l. An invertible drag-skip comprising a receptacle having a bottom bearing wall and load retaining walls surrounding same, a

draft attachment near the bottom of the Y An invertible drag-skip provided with rolling surfaces and with a sliding under surface on which l it bears when loaded and runners forming an upper sliding surfaceon which itl bea-rs when returning unloaded and which'is of lesser area than the said under surface. Y'

' 3. A drag-skip provided with a rolling surface on which the skip may roll over endwise, its bottom portion being inclosed on four sides to'retain the contents of the skip and' its upper portion open to allow thecontents to rbe discharged when the skip is rolled over.V

4. Av 'dragskip having a sliding under surface turned up at each end, and provided withaf'bottonrpor'tion which isinclosed on four sides to retain'the contents of the skip, the upper portion being open to allow ythe contents to l discharge when the skip is rolled over, a ldraft attachment for [drawing vift forward when loaded, and a second draftattachment atits' upper and forward corner Vwith an outturn'edarc shaped upper surface with which the said second attachment Y i cooperates to overturn the skip byY a backward pull on said second attachment.

In witness whereof IV have hereunto set my hand' this 23rd day ofH July, 1915.

ARs'NE ArEnniLLniT.

Commissioner of- Patents, 

